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3 years ago

Solve this problem as quickly as you can

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

7 0

What is the expression though?

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As a farmer, Felipe keeps a close eye on the weather. After a few stressful weeks with no rain, Felipe was relieved when it star

Sladkaya [172]

Answer:

The time it took until 2 inches of rain fell is 8 hours

Step-by-step explanation:

You know that the proportional relationship between the amount of time (in hours) it had been raining, x, and the amount of rain (in inches) it had fallen, y, is y = 0.25*x

To find the time that passed until 2 inches of rain fell, you must replace the amount of rain (in inches) that had fallen "and" by that value. In this way the following expression is obtained:

2= 0.25*x

Solving:

$\frac{2}{0.25}=x$

8 = x

So, remembering that the amount of time it had been raining, x, is expressed in hours, the time it took until 2 inches of rain fell is 8 hours.

5 0

3 years ago

A three course meal includes an appetizer, a main course and a dessert. A restaurant offers 2 kinds of appetizer, four kinds of

Vladimir [108]

The answer is c, I belive

8 0

3 years ago

Suppose that you are to make a rectangular box with a square base from two different materials. The material for the top and fou

saw5 [17]

Answer:

height = 14.5 ft

width = length = 3.2 ft

Step-by-step explanation:

Let the side of the square base is a and the height of the box is h.

The material required to make the box is equal to the total surface area of the box.

Area of base = a²

Cost of square base is $ 2 per ft²

So, the cost of making base = 2a²

Area of four walls + area of top = 2 (a² + ah + ah) + a² = 3a² + 2ah

Cost of making walls and the top is $ 1 per ft²

So, the cost of making walls and the top = 1 x ( 3a² + 2ah)

Total cost of making the box = 2a² + 3a² + 2ah = 5a² + 2ah

According to the question

144 = 5a² + 2ah

$h = \frac{144-5a^{2}}{2a}$ .... (1)

The volume of the box is V = length x width x height

V = a x a x h

V = 72 a - 2.5 a³ from equation (1)

Differentiate both sides with respect to a.

dV/da = 72 - 7.5 a²

Put, it equal to zero for maxima and minima

7.5 a² = 72

a = 3.2 ft

Put in equation (1)

$h = \frac{144-5\times 3.2\times 3.2}{2\times 3.2}$

h = 14.5 ft

So, the dimensions of the box are

height = 14.5 ft

width = length = 3.2 ft

6 0

3 years ago

Find the value of x for which m ll n

Nikitich [7]

Set the expressions equal to each other to get 17

3 0

3 years ago

Samantha walks 15 meters in 5 seconds. What is her walking rate? * 1 point

Scrat [10]

Answer:

3 meters per second

Step-by-step explanation:

15 divided by 5 = 3

3 m/s

6 0

3 years ago

Read 2 more answers